CN103151086A - Integral hard alloy punch tip for pressing UO2 fuel pellets - Google Patents
Integral hard alloy punch tip for pressing UO2 fuel pellets Download PDFInfo
- Publication number
- CN103151086A CN103151086A CN2011103990211A CN201110399021A CN103151086A CN 103151086 A CN103151086 A CN 103151086A CN 2011103990211 A CN2011103990211 A CN 2011103990211A CN 201110399021 A CN201110399021 A CN 201110399021A CN 103151086 A CN103151086 A CN 103151086A
- Authority
- CN
- China
- Prior art keywords
- drift
- face
- punch tip
- hard alloy
- suppressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention relates to the technical field of manufacture of nuclear fuel elements for nuclear power stations, and particularly discloses an integral hard alloy punch tip for pressing UO2 fuel pellets. The hard alloy punch tip comprises a punch tip working end, a punch tip king rod and a punch tip positioning portion which are integrally formed, wherein the punch tip positioning portion is of a cylinder structure, the punch tip working end is fixed on the central axis of the punch tip positioning portion through the punch tip king rod in the shape of a cylindrical bar, and the punch tip working end is of a cylinder structure with a diameter slightly larger than that of the punch tip king rod. The end face of the punch tip working end comprises an end face butterfly shape, an end face platform and an end face chamfer, wherein the center of the end face butterfly shape is of a spherical structure, the end face platform of an annular plane structure is arranged along the edge of the end face butterfly shape, and the end face chamfer is arranged along the edge of the punch tip working end. The hard alloy punch tip is very good in abrasion resistance and can be used for 1.5 million times, and the service life of the hard alloy punch tip is prolonged by 15 times as compared with that of a steel punch.
Description
Technical field
The invention belongs to used in nuclear power station nuclear fuel element manufacturing technology field, be specifically related to a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet.
Background technology
UO
2fuel pellet is by powder metallurgy fabrication process, UO
2powder must be produced into the finished product pellet through sintering, grinding again after press is pressed into green briquette.The compacting tool set of pellet is extremely important, and it has the advantages that manufacturing accuracy is high, output is large.Compacting UO
2each drift of fuel pellet rotary press need to bear the compacting of 7500 times every day.Upper and lower drift used is all to adopt mould steel and bearing steel manufacture, UO at present
2the main abrasive manner of fuel pellet drift is the pitch corrosion wearing and tearing that produce after the pressurized of end profile in powder compaction process.The steel punch end face just presents a progressively process of wearing and tearing from bringing into use, the drift of each steel just must be changed because of heavy wear in 100,000 back punching head end profile of compacting, and every compacting way of just changing afterwards drift for 100,000 times increases the frequency of equipment downtime, maintenance on the one hand, be unfavorable for the site environment health; Also increase on the other hand production cost.
Summary of the invention
The object of the present invention is to provide a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet, solve the problem that end face is easy to wear and serviceable life is too short that existing mold steel and bearing steel are manufactured drift.
Technical scheme of the present invention is as follows: a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet, comprise integrated drift work end, drift king-rod and drift location division, wherein, the drift location division is cylindrical structure, drift work end is fixed on the central axis of drift location division by the drift king-rod of cylindrical bar shape, drift work end is that slightly larger in diameter is in the cylindrical structure of drift king-rod, the end face of drift work end comprises the end face butterfly of center spherical structure, the end face platform of the annular plane structure that arranges along end face butterfly edge, and the end face chamfering that arranges of edge, drift work end.
The spherical radius SR of the end face butterfly at described drift operative end surface end surface center is 17.9mm～19.6mm; The diameter of end face butterfly is 7.425mm～7.575mm; The difference in height of the end face of end face butterfly and end face platform is 0.37mm～0.39mm.
The diameter of described drift working end face is 10.055mm～10.065mm.
The width of end face chamfering on the end face plane of described drift operative end surface end surface upper edge is 0.76mm～0.78mm; The height of end face chamfering is 0.26mm～0.28mm.
The end face surface roughness of described drift working end face is Ra0.025um.
Face top, described drift working end is 33.994mm～34.006mm apart from the height of bottom, drift location division.
Described whole hard alloy drift be take the Hardmetal materials that tungsten carbide is matrix and is made, and comprises tungsten carbide that weight content is 84%～92% and 6%～16% metallic cobalt.
Remarkable result of the present invention is: of the present invention a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet has very good wearing quality, can reach the serviceable life of this hard alloy punch head 1,500,000 times, compares the steel drift and improves 15 times serviceable life; Simultaneously, improved UO
2the surface quality of fuel pellet.
The accompanying drawing explanation
Fig. 1 is of the present invention a kind of for suppressing UO
2the whole hard alloy punch structure schematic diagram of fuel pellet;
The partial enlarged drawing that Fig. 2 is Fig. 1;
The vertical view that Fig. 3 is Fig. 2;
In figure: 1, drift work end; 2, drift king-rod; 3, drift location division; 4, end face butterfly; 5, end face platform; 6, end face chamfering.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figures 1 to 3, a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet comprises integrated drift work end 1, drift king-rod 2 and drift location division 3, wherein, drift location division 3 is the cylindrical structure that diameter is larger, and can drift location division 3 be fixed on plunger holder by hold-down nut, realize the stationary positioned to whole drift, drift work end 1 is fixed on the central axis of drift location division 3 by the drift king-rod 2 of cylindrical bar shape, wherein, drift work end 1 integral body is that slightly larger in diameter is in the cylindrical structure of drift king-rod 2, the end face of drift work end 1 comprises the end face butterfly 4 of center spherical structure, the end face platform 5 of the annular plane structure arranged along end face butterfly 4 edges, and the end face chamfering 6 of drift work end 1 edge setting, wherein, the spherical radius SR=17.9mm of the end face butterfly 4 at 1 end face center, drift work end, the diameter of end face butterfly 4 is 7.425mm, the difference in height of end face butterfly 4 tops and end face platform 5 is 0.37mm, the width of end face chamfering 6 on the end face plane is 0.76mm, and the height of end face chamfering 6 is 0.26mm, the diameter of drift work end 1 is 10.055mm, the surfaceness of drift work end 1 end face is Ra0.025um, 1 top, drift work end is 33.994mm apart from the height of 3 bottoms, drift location division.
Of the present invention a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet be take the Hardmetal materials that tungsten carbide is matrix and is made, and comprises tungsten carbide that weight content is 84% and 16% metallic cobalt.
As shown in Figures 1 to 3, a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet comprises integrated drift work end 1, drift king-rod 2 and drift location division 3, wherein, drift location division 3 is the cylindrical structure that diameter is larger, and can drift location division 3 be fixed on plunger holder by hold-down nut, realize the stationary positioned to whole drift, drift work end 1 is fixed on the central axis of drift location division 3 by the drift king-rod 2 of cylindrical bar shape, wherein, drift work end 1 integral body is that slightly larger in diameter is in the cylindrical structure of drift king-rod 2, the end face of drift work end 1 comprises the end face butterfly 4 of center spherical structure, the end face platform 5 of the annular plane structure arranged along end face butterfly 4 edges, and the end face chamfering 6 of drift work end 1 edge setting, wherein, the spherical radius SR=18.8mm of the end face butterfly 4 at 1 end face center, drift work end, the diameter of end face butterfly 4 is 7.5mm, the difference in height of end face butterfly 4 tops and end face platform 5 is 0.38mm, the width of end face chamfering 6 on the end face plane is 0.77mm, and the height of end face chamfering 6 is 0.27mm, the diameter of drift work end 1 is 10.06mm, the surfaceness of drift work end 1 end face is Ra0.025um, 1 top, drift work end is 34mm apart from the height of 3 bottoms, drift location division.
Of the present invention a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet be take the Hardmetal materials that tungsten carbide is matrix and is made, and comprises tungsten carbide that weight content is 88% and 12% metallic cobalt.
As shown in Figures 1 to 3, a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet comprises integrated drift work end 1, drift king-rod 2 and drift location division 3, wherein, drift location division 3 is the cylindrical structure that diameter is larger, and can drift location division 3 be fixed on plunger holder by hold-down nut, realize the stationary positioned to whole drift, drift work end 1 is fixed on the central axis of drift location division 3 by the drift king-rod 2 of cylindrical bar shape, wherein, drift work end 1 integral body is that slightly larger in diameter is in the cylindrical structure of drift king-rod 2, the end face of drift work end 1 comprises the end face butterfly 4 of center spherical structure, the end face platform 5 of the annular plane structure arranged along end face butterfly 4 edges, and the end face chamfering 6 of drift work end 1 edge setting, wherein, the spherical radius SR=19.6mm of the end face butterfly 4 at 1 end face center, drift work end, the diameter of end face butterfly 4 is 7.575mm, the difference in height of end face butterfly 4 tops and end face platform 5 is 0.39mm, the width of end face chamfering 6 on the end face plane is 0.78mm, and the height of end face chamfering 6 is 0.28mm, the diameter of drift work end 1 is 10.065mm, the surfaceness of drift work end 1 end face is Ra0.025um, 1 top, drift work end is 34.006mm apart from the height of 3 bottoms, drift location division.
Of the present invention a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet be take the Hardmetal materials that tungsten carbide is matrix and is made, and comprises tungsten carbide that weight content is 92% and 8% metallic cobalt.
Claims (7)
1. one kind for suppressing UO
2the whole hard alloy drift of fuel pellet, it is characterized in that: comprise integrated drift work end (1), drift king-rod (2) and drift location division (3), wherein, drift location division (3) is cylindrical structure, drift work end (1) is fixed on the central axis of drift location division (3) by the drift king-rod (2) of cylindrical bar shape, drift work end (1) is that slightly larger in diameter is in the cylindrical structure of drift king-rod (2), the end face of drift work end (1) comprises the end face butterfly (4) of center spherical structure, the end face platform (5) of the annular plane structure arranged along end face butterfly (4) edge, and the end face chamfering (6) of edge, drift work end (1) setting.
2. according to claim 1 a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: the spherical radius SR of the end face butterfly (4) at face (1) end face center, described drift working end is 17.9mm～19.6mm; The diameter of end face butterfly (4) is 7.425mm～7.575mm; The difference in height of the end face of end face butterfly (4) and end face platform (5) is 0.37mm～0.39mm.
3. according to claim 1 a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: the diameter of described drift working end face (1) is 10.055mm～10.065mm.
4. according to claim 1 a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: the width of end face chamfering (6) on the end face plane of face (1) end face upper edge, described drift working end is 0.76mm～0.78mm; The height of end face chamfering (6) is 0.26mm～0.28mm.
According to claim 1～4 described any one for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: the end face surface roughness of described drift working end face (1) is Ra0.025um.
6. according to claim 1 a kind of for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: face (1) top, described drift working end is 33.994mm～34.006mm apart from the height of bottom, drift location division (3).
According to claim 1～4 described any one for suppressing UO
2the whole hard alloy drift of fuel pellet is characterized in that: described whole hard alloy drift be take the Hardmetal materials that tungsten carbide is matrix and is made, and comprises tungsten carbide that weight content is 84%～92% and 6%～16% metallic cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103990211A CN103151086A (en) | 2011-12-06 | 2011-12-06 | Integral hard alloy punch tip for pressing UO2 fuel pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103990211A CN103151086A (en) | 2011-12-06 | 2011-12-06 | Integral hard alloy punch tip for pressing UO2 fuel pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103151086A true CN103151086A (en) | 2013-06-12 |
Family
ID=48549094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103990211A Pending CN103151086A (en) | 2011-12-06 | 2011-12-06 | Integral hard alloy punch tip for pressing UO2 fuel pellets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103151086A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438585A (en) * | 2014-12-08 | 2015-03-25 | 无锡朗贤汽车组件研发中心有限公司 | Die for reducing abrasion of hot-forming steel plate piercing punch |
| CN109482731A (en) * | 2018-10-31 | 2019-03-19 | 蓬溪河冶高科有限责任公司 | A kind of bar single-point punching press red needle and its processing technology |
| CN112951461A (en) * | 2019-12-10 | 2021-06-11 | 中核北方核燃料元件有限公司 | Thin-wall LiAlO2Ceramic core block forming die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201169067Y (en) * | 2007-11-14 | 2008-12-24 | 王景明 | Novel porous briquette making machine |
| JP4386689B2 (en) * | 2003-08-28 | 2009-12-16 | パンチ工業株式会社 | Punch for press dies |
| CN201711431U (en) * | 2010-07-15 | 2011-01-19 | 宏茂五金(昆山)有限公司 | Hexagonal bolt head one-step molding mold |
| CN201931067U (en) * | 2011-01-06 | 2011-08-17 | 苏州三基铸造装备股份有限公司 | Injection plunger of extrusion casting machine |
| CN202434211U (en) * | 2011-12-06 | 2012-09-12 | 中核建中核燃料元件有限公司 | Integral hard alloy punch for pressing UO2 fuel pellets |
-
2011
- 2011-12-06 CN CN2011103990211A patent/CN103151086A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4386689B2 (en) * | 2003-08-28 | 2009-12-16 | パンチ工業株式会社 | Punch for press dies |
| CN201169067Y (en) * | 2007-11-14 | 2008-12-24 | 王景明 | Novel porous briquette making machine |
| CN201711431U (en) * | 2010-07-15 | 2011-01-19 | 宏茂五金(昆山)有限公司 | Hexagonal bolt head one-step molding mold |
| CN201931067U (en) * | 2011-01-06 | 2011-08-17 | 苏州三基铸造装备股份有限公司 | Injection plunger of extrusion casting machine |
| CN202434211U (en) * | 2011-12-06 | 2012-09-12 | 中核建中核燃料元件有限公司 | Integral hard alloy punch for pressing UO2 fuel pellets |
Non-Patent Citations (1)
| Title |
|---|
| 程涛: "WC-10Co硬质合金低压烧结工艺的探索", 《中国硕士学位论文全文数据库》, 18 September 2006 (2006-09-18), pages 4 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438585A (en) * | 2014-12-08 | 2015-03-25 | 无锡朗贤汽车组件研发中心有限公司 | Die for reducing abrasion of hot-forming steel plate piercing punch |
| CN109482731A (en) * | 2018-10-31 | 2019-03-19 | 蓬溪河冶高科有限责任公司 | A kind of bar single-point punching press red needle and its processing technology |
| CN112951461A (en) * | 2019-12-10 | 2021-06-11 | 中核北方核燃料元件有限公司 | Thin-wall LiAlO2Ceramic core block forming die |
| CN112951461B (en) * | 2019-12-10 | 2024-02-09 | 中核北方核燃料元件有限公司 | Thin-wall LiAlO 2 Ceramic core block forming die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202434211U (en) | Integral hard alloy punch for pressing UO2 fuel pellets | |
| CN202461279U (en) | Composite die applied for processing short small flanging gasket type component | |
| CN101708526B (en) | Method and die for forming driven helical gear profile of automobile rear axle | |
| CN103151086A (en) | Integral hard alloy punch tip for pressing UO2 fuel pellets | |
| CN200977542Y (en) | Combination type steel ball mold | |
| CN105014308A (en) | Manufacturing method of miniature steel balls | |
| CN104084514B (en) | A kind of semiaxis forging molding process | |
| CN102588588A (en) | Biphasic carbon alloy steel end socket and production equipment thereof | |
| CN112756538A (en) | Near-net forming die and method for forging hinge beam of refined steel stone pressure equipment | |
| CN203992383U (en) | A kind of powder compaction drift | |
| CN202803333U (en) | Grinding rod for novel ball grinding mill | |
| CN202343840U (en) | Forging mold of middle concave forge | |
| CN201432036Y (en) | Die | |
| CN209867359U (en) | Chamfer gear powder metallurgy compacting die | |
| CN204736112U (en) | Emery wheel forming die | |
| CN209189641U (en) | Alloy rises a casted die mould | |
| CN204135257U (en) | A kind of mould of power forging automobile connecting bar | |
| CN108188325B (en) | Cold heading forming folding-preventing die for thin-wall workpiece | |
| CN202006699U (en) | Powder metallurgy hydraulic wheel hub | |
| CN202545800U (en) | Equipment for producing biphase carbon alloy steel end socket | |
| CN206868924U (en) | A kind of mold and punching head | |
| CN102632372A (en) | Process for forming helical transmission device and die for processing same | |
| CN204108015U (en) | A kind of valve stem cold extrusion die | |
| CN205289616U (en) | Transmission shaft disc bead fork mould | |
| CN214557384U (en) | Many stamping dies of carbide mushroom head shape dysmorphism piece pressed compact |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |